59.72% is the change from 509 to 813
Calculation steps:
[( 813 - 509 ) ÷ 509] x 100 = 59.72%
Formula
Percentage change = [(813 - 509) / 509] x 100
Subtract the new number by the original number
813 - 509 = 304
304 ÷ 509 = 0.5972495088408645
0.5972495088408645 x 100 = 59.72%